alexgriff

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• I am alexgriff on github.
• I am alexgriff (https://keybase.io/alexgriff) on keybase.
• I have a public key ASA-QiayPEVGEAvYns_HyF6m9UNcJbP4gYNxm_26EFr6RQo

To claim this, I am signing this object:

alexgriff

# write a method 'get_names' that receives an array of instructors:

instructors = [{name: 'terrance', hometown: 'nj', mood: 'excited'}, {name: 'daniel', hometown: 'philadelphia', mood: 'refreshed'}, {name: 'alex', hometown: 'upstate ny', mood: 'good' }]

def get_names(instructors)
  
  
end

# the method should return an array of just the instructors names

alexgriff

# How to think about the Single Responsibility Principle in your application...
# What part of your app has the responsibility of making the request to the API
# and turning the response into Ruby Objects & records in your database...?

# Not really the Models...
# ...And you may not want all the code that does this just intertwined within the logic of your app
# ... so where to put this code?


# That's what the Adapter Pattern is for.

alexgriff

# Add your code here

alexgriff

def count_letters(sentence)
  
end

# count_letters("hello hi")
#=> {'h'=> 2, "e"=> 1, "l"=> 2, "o" => 1, " "=> 1, "i"=> 1}


def has_2?(collection, element)

alexgriff

array = [[1],[2],[3]]

# 1 will it error? / name that error!
# 1a.
array.first + 1

# 1b.
array.first.first + 2

# 1c.

alexgriff

# - create a candidate
# --------------------

obama = Candidate.create(first_name: "Barack", last_name: "Obama", birthdate:"08-04-1961", 
        position_running_for: "President", national_candidate: true)
# (0.1ms)  begin transaction
# SQL (0.3ms)  INSERT INTO "candidates" ("first_name", "last_name", "birthdate", "position_running_for", "national_candidate") VALUES (?, ?, ?, ?, ?)  [["first_name", "Barack"], ["last_name", "Obama"], ["birthdate", "1961-04-08"], ["position_running_for", "President"], ["national_candidate", "t"]]
# (1.4ms)  commit transaction
# => #<Candidate id: 1544, position_running_for: "President", first_name: "Barack", last_name: "Obama", 
#    birthdate: "1961-04-08",  national_candidate: true > 

alexgriff

# Voter, the polymorphic model
class Voter < ActiveRecord::Base
  belongs_to :voterable, polymorphic: true

  has_many :votes
  has_many :candidates, through: :votes
end

# Citizen, has one voter as voterable
# this is a new model where many of the attributes 

alexgriff

class MakeVoterPolymorphic < ActiveRecord::Migration
  def change
    add_column :voters, :voterable_id, :integer
    add_column :voters, :voterable_type, :string
  end
end

# you could also use a shortened syntax that would do the same thing
# and add these two columns to the table

alexgriff

candidate = FactoryGirl.create :candidate, :with_many_voters
# => <Candidate id: 1534, position_running_for: "President", first_name: "Rudolph", 
# last_name: "Carter", personality_type: "Brave, Hasty", 
# bio: "Ut molestiae maiores non corporis. Voluptatem eum ...", political_views: nil, national_candidate: true>

candidate.votes
# => #<ActiveRecord::Associations::CollectionProxy 
# [#<Vote id: 1544, voter_id: 556, candidate_id: 1534>, 
# #<Vote id: 1545, voter_id: 557, candidate_id: 1534>, ...
# #<Vote id: 1553, voter_id: 565, candidate_id: 1534>]>